What is JaSON ##

What is JaSON

JaSON is a Google Chrome extension for testing APIs and making HTTP network requests.

Install now

Free and ready to install now from the Chrome Web Store

Features

Automatically sends cookies from Chrome. This is extremely handy for APIs which require authentication. Simply authenticate via your browser as normal and JaSON will send cookies for requests which match.

HTTP methods

GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS

Request history

Keeps request history with full text search. Individual history items can be deleted, or marked as a “favourite” for easy access. History from previous versions of JaSON will be automatically migrated. Stores history in IndexedDB for improved performance.

Dark/light theme

Change the colour theme to suit your work environment.

Formatted input/output

Provides an IDE like experience when editing request body and headers. Automatically formats request/response body syntax and colour based on content type.

Content type

Supports JSON, XML, and form encoded data by default. Additional content types can be used by setting a custom content type header.

New and improved

Completely re-written, new styling, layout, colours, additional features and improved performance.

100% open source

Source code is available from GitHub